Update black version from 26.1.0 to 26.3.1

Author: tmikula-dev

requirements.txt

@@ -2,7 +2,7 @@ mypy==1.19.1
 mypy-extensions==1.1.0
 typing_extensions==4.15.0
 pylint==4.0.4
-black==26.1.0
+black==26.3.1
 pytest==9.0.2
 pytest-cov==7.0.0
 pytest-mock==3.15.1